Thermometer and barometer mold



(No Model.)

WSOMERVILLE. THERMOMBTERAND BAROMBTBR MOLD, 65o.

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THERMOMETER AND BAROMETER MOLD, 84C.

SPECIFICATEON forming part of Letters Patent No. 236,793, dated April.l5, 188%.

Application filed March 3, 1853." (No model.)`

mometer and Barometer Molds, and in the lllanufacture of Thermometersand Barometers; and I do hereby-declare the following to be a full,clear, and exact description of the invention, such as Will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying dra-Wings, and to theletters and figures 'of reference marked thereon, which form a part oi'this specification. v

My invention relates to thermometers, or thermometers and barometerscombined, and in the manufacture of glass', china, or earthen- Warethermometer plates or frames, or thermometer and barometer plates orframes combined, with the numerals, marks, Words, Sto., indicatingtemperato re and changes of weather vall in one piece, together with alongitudinal opening in the pla-te or frame for the insertion of theglass or mercurial tube, and likewise, in case of a barometer plate orframe, to have a longitudinal opening or slot for the insertion of thebarometer-tube; and to this end my invention consists in forming themold proper in two sections-a base or bottom piece having a cavitj,r forthe pressed or molded thermometer or barometer plate or frame, or bothcombined, and having also a cavity for the plunger, the latter havingprojections to form the longitudinal opening or slots in the plate orframe.

My invention consists, further, in a novel process of pressing into orupon the plate or frame the numerals, marks, and Wordings slot or slotsfor the insertion of the respective tubes. Fig. a is a detail section ofthe plunger, showing the numerals, marks, Src., as projecting from itsunder face. Fig. 5 is a detail section of the glass frame, showing thatthe marks, Src., can be impressed into its upper face. Fig.v 6 is asectional elevation ofplnnger and base plate (or mold proper) with themolded glass plate between said parts. Figs. 7 andlS are details,respectively, of the plunger and glass frame, showing the reverse mannerof forming the marks, lines, 5to., upon the face of the glass frame.

Similarletters indicate similar parts throughout the several views.

A is the base-plate of the mold, and is provided on its upper surfacewith a cavity, a, in which the thermometer and barometer plates areformed, and at o is another cavity or offset 1 marks, lines, and lettersin-elevation or depression, (see b2, Figs. 4t and 7,) so as to form onthe face of-the thermometer plate or thermometer and barometer plate theproper unmerals, marks, and words, D, in relief' or depression, (seeFigs. 5, 8,) indicating the degrecs of temperature and changes ofWeather, with which thermometers and barometers are usually provided,and as clearly illustrated in Fig. l.

Instead of so providing the face of the plunger with the said numerals,marks, dto., the cavity a. of the mold can he provided with the samenumerals, marks, ltc., in elevation or depressiomwith the sameresults-viz., forming on the face of the frame or plate the propermarks, Wordings, 83o., indicatingk the degrees 'of temperature, changesof Weather, Snc.

Fig. 3 shows the frame or plate as it appears when completely,r made inthe mold.

More specically1 stated, this article of manufacture consists of theglass frame or plate C,

roo Y having the longitudinal opening or slots at c c',

and the face of said plate having,either in elevation or depression, themarks, Wordings, &c., with which thermometers and barometersareusuallyprovided.

As apparent, I can manufacture the thermometer plate or frameindependent of the barometer portion, each or both combined forming animproved article of trade.

The mold I have illustrated in Fig. Gis for ordinary plain plates; butmolds can be made or changed in a Inanner Well known, so as to Vvary theshapes into many fanciful shapes, as

desired.

D represents the glass or mercurial tube for the thermometer. The tube Dis simply inserted into the slot or opening c of the glass frame C, andfastened at top and bottom in Inanner usual. (See Figs. 1, 2.) In asimilar manner the barometer-tube E can be inserted and fastened in theopening c of the.

plate or frame C. (SeeFigs. l, 2.) I can thus make a thermometerplate,also barometerplate, or both combined, ofpressed or mold ed glass, orchina or earthenware, having the numerals and marks indicating thedegrees and changes of temperature or weather most accurately, andWithout possibility of variation, pressed into or upon same at sametime. 'Ihese materials are non-conductors of heat or cold, (all suchmade of tin, metal, &c., are notg) besides, I can mold these plates orframes so as to have the tube or tubes (mercury-tube and barometer-tube)free from nearly all contact,

vWithout the slot or openings.

l. In the manufacture of thermometer or barometer plates or frames, orboth combined in one piece, the mold herein described, con sisting of abase or bed plate and plunger With elevations or depressions therein orthereon for forming the numerals, marks, Src., indicating degrees oftemperature and changes of Weather,

and with or without the projections for provid' ing in said plate a slotor slots, as and for the purposes set forth.

2. As a new article of manufacture, a thermometer plate or frame orbarometer plate or frame, or both combined, having the usual marks,numerals, &c.,pressed into or upon the plate, substantially as and forthe purposes set forth.

WILLIAM 'soMEnvILLE Witnesses:

WILLIAM WV. HnRTI-IEL, JOHN W. HERTHEL.

